81% (2000)

67% (2011)

59% (1994)

72% (2004)

58% (2012)

70% (1992)

70% (2001)

56% (2013)

77% (1988)

70% (2005)

77% (1998)

68% (2001)

58% (2009)

64% (2010)

74% (1995)

56% (2017)

68% (1999)

63% (1987)

55% (2008)

53% (1987)